:root {
  --bg: #020617;
  --bg-base: #020617;
  --card: rgba(15, 23, 42, 0.86);
  --muted-card: rgba(15, 23, 42, 0.78);
  --card-border: rgba(148, 163, 184, 0.45);
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-400: #60a5fa;
  --accent: #a855f7;
  --accent-soft: rgba(168, 85, 247, 0.35);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --blur: 22px;
  --shadow-soft: 0 28px 80px rgba(15, 23, 42, 0.75);
  --radius-lg: 22px;
}

body.light {
  --bg: #eef4ff;
  --bg-base: #eef4ff;
  --card: rgba(255, 255, 255, 0.9);
  --muted-card: rgba(255, 255, 255, 0.8);
  --card-border: rgba(148, 163, 184, 0.35);
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-400: #60a5fa;
  --accent: #a855f7;
  --accent-soft: rgba(168, 85, 247, 0.25);
  --text: #0f172a;
  --muted: #6b7280;
  --blur: 18px;
  --shadow-soft: 0 24px 70px rgba(15, 23, 42, 0.24);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  background-color: var(--bg-base);
  color: var(--text);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Animated background */
.bg-orbit {
  position: fixed;
  inset: -30%;
  pointer-events: none;
  z-index: -2;
  background:
    radial-gradient(circle at 0% 0%, rgba(56, 189, 248, 0.15), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(168, 85, 247, 0.2), transparent 55%),
    radial-gradient(circle at 0% 100%, rgba(59, 130, 246, 0.16), transparent 55%);
  filter: blur(40px);
  opacity: 0.9;
  animation: orbit 26s infinite alternate ease-in-out;
}

@keyframes orbit {
  0% { transform: translate3d(-2%, 2%, 0) scale(1); }
  50% { transform: translate3d(2%, -1%, 0) scale(1.05); }
  100% { transform: translate3d(-1%, -3%, 0) scale(1.02); }
}

/* NAV */
nav {
  display: flex;
  justify-content: center;
  gap: 26px;
  padding: 12px 26px;
  background: rgba(15, 23, 42, 0.9);
  border-radius: 999px;
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-soft);
  position: sticky;
  top: 18px;
  width: max-content;
  margin: 0 auto;
  z-index: 30;
}

body.light nav { background: rgba(255, 255, 255, 0.9); }

nav a {
  font-weight: 600;
  color: var(--blue-400);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 6px 14px;
  border-radius: 999px;
  position: relative;
  transition: color 0.22s ease, background 0.22s ease, transform 0.18s ease;
}

nav a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 3px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue-400), transparent);
  opacity: 0;
  transform: scaleX(0.4);
  transform-origin: left center;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

nav a:hover {
  transform: translateY(-1px);
  background: rgba(96, 165, 250, 0.16);
}

nav a.active {
  background: rgba(15, 23, 42, 0.98);
  color: #f9fafb;
}

body.light nav a.active {
  background: rgba(37, 99, 235, 0.12);
  color: var(--blue-700);
}

nav a.active::after {
  opacity: 1;
  transform: scaleX(1);
}

/* Theme toggle */
#themeToggle {
  position: fixed;
  top: 18px;
  right: 20px;
  cursor: pointer;
  font-size: 22px;
  z-index: 9999;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(var(--blur));
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

#themeToggle:hover {
  transform: translateY(-1px) scale(1.06);
}

/* Layout containers */
.wrap,
.wrap-about,
.wrap-skills,
.wrap-services,
.wrap-projects,
.wrap-contact {
  max-width: 1500px;
  margin: 0 auto;
  padding: 56px 26px 60px;
}

/* Header hero */
.site-header {
  text-align: center;
  padding: 76px 24px 34px;
}

.tagline-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.55);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 10px;
}

body.light .tagline-pill { background: rgba(255, 255, 255, 0.9); }

.site-title {
  margin: 0;
  font-size: clamp(3.2rem, 7vw, 4.8rem);
  font-weight: 900;
  letter-spacing: -0.08em;
  background: conic-gradient(
    from 160deg,
    var(--blue-700),
    var(--blue-400),
    var(--accent),
    var(--blue-700)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-subtitle {
  color: var(--muted);
  font-weight: 500;
  margin: 8px auto 0;
  max-width: 540px;
}

/* HOME LAYOUT */
.home-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
  gap: 36px;
}

/* Hero card */
.hero-card {
  padding: 32px 32px 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  background: var(--card);
  backdrop-filter: blur(var(--blur));
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

/* Shine */
.shine {
  position: relative;
  overflow: hidden;
}

.shine::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at var(--shine-x, 50%) var(--shine-y, 0%), rgba(255, 255, 255, 0.32), transparent 55%);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.shine:hover::before {
  opacity: 1;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 0 0, rgba(96, 165, 250, 0.33), transparent 55%),
    radial-gradient(circle at 100% 100%, var(--accent-soft), transparent 55%);
  opacity: 0.9;
  pointer-events: none;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.05);
  pointer-events: none;
  mix-blend-mode: screen;
}

/* Hero CTA buttons */
.hero-actions {
  margin-top: 22px;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.primary-cta,
.secondary-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  overflow: hidden;
  isolation: isolate;
  transition:
    transform 0.18s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.primary-cta::before,
.secondary-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(120deg, var(--blue-600), var(--accent));
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.85;
}

.primary-cta::after,
.secondary-cta::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(18px);
  z-index: -1;
}

.primary-cta {
  color: var(--muted);
}

.primary-cta::after {
  background: linear-gradient(120deg, var(--blue-600), var(--blue-400));
}

.primary-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.55);
}

.secondary-cta {
  color: var(--muted);
}

.secondary-cta::after {
  background: rgba(15, 23, 42, 0.8);
}

body.light .secondary-cta::after {
  background: rgba(255, 255, 255, 0.9);
}

.secondary-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.55);
}

.hero-heading {
  margin: 0 0 12px;
  font-size: clamp(1.9rem, 3.2vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
}

.hero-text {
  margin: 0 0 10px;
  color: var(--muted);
}

/* Stats column */
.stats-column {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.stat-card {
  padding: 16px 16px 14px;
  border-radius: 18px;
  background: var(--muted-card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(var(--blur));
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.6);
}

.stat-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.stat-value {
  display: block;
  margin-top: 4px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}

.stat-desc {
  margin: 4px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

/* IMPROVED FEATURE GRID */
.feature-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}

.feature-main {
  grid-column: 1 / -1;
}

.feature-achievements {
  grid-column: 1 / 2;
}

.feature-contact {
  grid-column: 2 / 3;
}

.feature-card {
  border-radius: 20px;
  padding: 20px 22px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.feature-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.feature-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  color: var(--muted);
  background: rgba(15, 23, 42, 0.7);
}

body.light .feature-tag {
  background: rgba(255, 255, 255, 0.9);
}

.feature-tag.subtle {
  opacity: 0.85;
}

.feature-card ul li {
  margin: 6px 0;
}

.feature-card:hover {
  transform: translateY(-4px);
}

/* Responsive: single column on small screens */
@media (max-width: 960px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-main,
  .feature-achievements,
  .feature-contact {
    grid-column: 1 / -1;
  }
}

/* Base card styles */
.card,
.muted-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(var(--blur));
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
  transition:
    transform 0.22s ease,
    box-shadow 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
  padding: 24px;
}

.card { background: var(--card); }
.muted-card { background: var(--muted-card); }

.card::before,
.muted-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 0 0, rgba(96, 165, 250, 0.33), transparent 55%),
    radial-gradient(circle at 100% 100%, var(--accent-soft), transparent 55%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.32s ease;
}

.card::after,
.muted-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.05);
  pointer-events: none;
  mix-blend-mode: screen;
}

.card:hover::before,
.muted-card:hover::before {
  opacity: 1;
}

.card:hover,
.muted-card:hover {
  box-shadow: 0 26px 60px rgba(15, 23, 42, 0.85);
  border-color: rgba(248, 250, 252, 0.8);
}

/* Parallax + tilt */
.parallax { will-change: transform; }

.tilt {
  transform-style: preserve-3d;
  transition: transform 0.18s ease;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Titles */
.section-title {
  color: var(--blue-400);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 0 0 6px 0;
  font-size: clamp(1.4rem, 2.4vw, 1.8rem);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.with-icon::before {
  content: attr(data-icon);
  font-size: 1.2rem;
}

.divider {
  height: 2.5px;
  background: linear-gradient(90deg, var(--blue-400), transparent);
  border-radius: 999px;
  margin-bottom: 14px;
  max-width: 80px;
}

/* Text & lists */
p {
  margin: 0 0 10px;
  color: var(--text);
}

body:not(.light) p { color: var(--muted); }

ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

li {
  margin: 8px 0;
  color: var(--text);
}

body:not(.light) li { color: var(--muted); }

.link-list li + li { margin-top: 6px; }

/* Links */
a {
  color: var(--blue-400);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: opacity 0.22s ease, transform 0.18s ease, text-shadow 0.22s ease;
}

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 2px;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue-400), transparent);
  transition: width 0.22s ease;
}

a:hover {
  opacity: 0.96;
  transform: translateY(-1px);
  text-shadow: 0 0 10px rgba(96, 165, 250, 0.9);
}

a:hover::after { width: 100%; }

/* Footer */
footer {
  font-size: 14px;
  margin-top: 10px;
  opacity: 0.8;
  text-align: center;
  padding: 30px 0 40px;
}

/* Responsive */
@media (max-width: 960px) {
  .home-layout {
    grid-template-columns: 1fr;
  }
  nav {
    gap: 16px;
    padding-inline: 18px;
    flex-wrap: wrap;
  }
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .feature-main {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  .wrap,
  .wrap-about,
  .wrap-skills,
  .wrap-services,
  .wrap-projects,
  .wrap-contact {
    padding-inline: 18px;
  }
  .card,
  .muted-card {
    padding: 20px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-main {
    grid-column: span 1;
  }
}